(19)
(11) EP 0 158 678 A1

(12)

(43) Date of publication:
23.10.1985 Bulletin 1985/43

(21) Application number: 84903844.0

(22) Date of filing: 09.10.1984
(51) International Patent Classification (IPC): 
B60G 17/ 019( . )
G01S 15/ 88( . )
 G01S 7/ 52( . )
(86) International application number:
PCT/US1984/001607
(87) International publication number:
WO 1985/001800 (25.04.1985 Gazette 1985/10)
(84) Designated Contracting States:
DE FR GB SE

(30) Priority: 17.10.1983 US 19830542696

(71) Applicant: TEKNAR, INC.
Fenton, MO 63026 (US)

(72) Inventors:
  • HEAD, Kenneth, O.
    Kirkwood, MO 63122 (US)
  • BOLLINGER, Arthur, E.
    Kirkwood, MO 63122 (US)

   


(54) SYSTEM FOR ULTRASONICALLY DETECTING THE RELATIVE POSITION OF A MOVEABLE DEVICE